Optical Properties
Luster
Vitreous
Pearly, Greasy
Pleochroism
NilArthur Thomas
For violet varieties
Dispersion
Not Available
0.01
27
Transparency
Transparent
Transparent
Refractive Index
1.599-1.637
1.570-1.614
Optic Character
Not Available
Not Available
Crystal System
Not Available
Orthorhombic
Birefringence
0.023-0.028
0.042-0.044
Clarity
Transparent
Transparent
